The new lids took 10 weeks of focused experimenting by Starbucks engineer Emily Alexander back in 2016.

“I am really excited to have developed something that can be part of this big transformation of going strawless,” Alexander said.

“It was this very small thing and now it is so much bigger and more impactful.”

The new lids will become standard on all iced drinks, except frappuccinos, which will be served with a straw made from paper or compostable plastic manufactured from fermented plant starch or other sustainable material.

“Starbucks’ decision to phase out single-use plastic straws is a shining example of the important role that companies can play in stemming the tide of ocean plastic,” said Nicholas Mallos, director of Ocean Conservancy’s Trash Free Seas program.

“With eight million metric tons of plastic entering the ocean every year, we cannot afford to let industry sit on the sidelines.”